FLUCTUATIONS IN THIN SMECTIC-A FILMS

被引：79

作者：

HOLYST, R ^{[1
]}

TWEET, DJ ^{[1
]}

SORENSEN, LB ^{[1
]}

机构：

[1] POLISH ACAD SCI,INST PHYS CHEM,DEPT 3,PL-01224 WARSAW,POLAND

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.65.2153

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The smectic layer displacement fluctuation profile, (r)=u2(r)1/2, has been calculated for thin smectic-A films. In thin smectic-A films the calculated fluctuation amplitudes are only S4, compared to S8 in a macroscopic sample. The fluctuations are suppressed at the two free surfaces by the surface tension, grow rapidly away from each surface, and have a parabolic profile near the center of the film. These results are in quantitative agreement (±0.1) with recent x-ray measurements. © 1990 The American Physical Society.

引用

页码：2153 / 2156

页数：4

共 15 条

[1] OBSERVATION OF ALGEBRAIC DECAY OF POSITIONAL ORDER IN A SMECTIC LIQUID-CRYSTAL [J].

ALSNIELSEN, J ;

LITSTER, JD ;

BIRGENEAU, RJ ;

KAPLAN, M ;

SAFINYA, CR ;

LINDEGAARDANDERSEN, A ;

MATHIESEN, S .

PHYSICAL REVIEW B, 1980, 22 (01) :312-320

[2]

CAILLE A, 1972, CR ACAD SCI B PHYS, V274, P891

[3]

CHAN KK, 1985, PHYS REV LETT, V54, P920, DOI 10.1103/PhysRevLett.54.920

[4]

DEGENNES PG, 1969, J PHYSIQUE COLLOQ, V30, P65

[5]

DEGENNES PG, 1974, PHYSICS LIQUID CRYST, P288

[6] NON-LINEAR ELASTIC THEORY OF SMECTIC LIQUID-CRYSTALS [J].

GRINSTEIN, G ;

PELCOVITS, RA .

PHYSICAL REVIEW A, 1982, 26 (02) :915-925

[7] X-RAY-SCATTERING IN SMECTIC-A LIQUID-CRYSTALS [J].

GUNTHEN, L ;

IMRY, Y ;

LAJZEROWICZ, J .

PHYSICAL REVIEW A, 1980, 22 (04) :1733-1740

[8] NEMATIC SMECTIC-A TRANSITION FOR PERFECTLY ALIGNED HARD SPHEROCYLINDERS - APPLICATION OF THE SMOOTHED-DENSITY APPROXIMATION [J].

HOLYST, R ;

PONIEWIERSKI, A .

PHYSICAL REVIEW A, 1989, 39 (05) :2742-2744

[9]

LANDAU LD, 1980, COURSE THEORETICAL P, V5, P434

[10]

ONIEWIERSKI A, 1987, LIQ CRYST, V22, P281

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